Pen rhymes with:
penh, penn, adrienne, again, amen, anchormen, antenne, beaubien, beauchesne, behn, behne, ben, benn, benne, bren, brenn, cayenne, chen, chien, cnn, cnnfn, comedienne, councilmen, courchesne, dehn, dehne, den, denn, denne, derouen, duchenne, dufresne, en, fehn, fen, fenn, georgienne, glen, glenn, gren, gwen, handymen, hehn, hen, henn, henne, hren, jen, jenn, jenne, jiawen, kehn, kehne, ken, kenn, knin, kren, krenn, lawmen, lehn, lehne, len, lpn, madeleine, magten, men, menn, menne, ming-jen, n, n., nguyen, oilmen, patrolmen, penh, penn, phen, phenfen, pitchmen, po-jen, prehn, prenn, rehn, ren, renn, renne, salmen, schwenn, sdn, sebastiane, sen, senn, senne, shen, sheng-fen, sten, sven, ten, teng-wen, then, tien, tienanmen, uren, venn, venne, wen, when, wren, wrenn, yen, yuen, zen
Pen sounds like:
p.m., pabon, paean, pain, paine, paino, pam, pammy, pan, panam, panama, panamanian, pane, panem, panini, pannone, pannu, panny, paone, papania, papin, papineau, papini, papon, pavon, pavone, pawn, pawnee, pay'n, payan, payin', payna, payne, peine, pena, penh, penman, penn, penna, penney, pennie, penniman, pennino, penny, peon, peony, pepin, peppin, peyman, pham, phan, phen, phenom, phenomena, phenomenon, phinney, phippen, phnom, phone, phoneme, phoney, phony, piana, piano, pima, pimm, pin, pina, pine, pineau, pineo, pinho, pini, pinion, pinn, pinneo, pinney, pinnow, pino, piny, pinyan, pion, pippen, pippin, pm, pneumo, pneumonia, poem, pom, poma, pomona, pon, pony, poon, popham, poppen, ppm, puffin, puma, pun, puny, pymm, pyne